SQLServer实现树型结构数据查询的存储过程,类似oracle的connect by

CREATE PROCEDURE [dbo].[sp_get_tree_relation]

(@table_name nvarchar(50), @id nvarchar(50), @name nvarchar(50), @parent_id nvarchar(50), @startId nvarchar(20))

AS

declare @v_id int

declare @v_level int

declare @sql nvarchar(500)

begin

create table #temp (id nvarchar(20),name nvarchar(50),parent_id nvarchar(20))

create table #t1 (id nvarchar(20),name nvarchar(50),parent_id nvarchar(20),level int)

-- 将需要查询关系的表的数据先导入到临时表

set @sql='insert into #temp select '+@id+','+@name+','+@parent_id +' from '+@table_name

exec sp_executesql @sql

set @v_level=1

set @v_id=@startId

insert #t1 select a.id,a.name,a.parent_id,@v_level from #temp a where a.id=@v_id

while @@rowcount>0

begin

set @v_level=@v_level+1

insert #t1 select a.id,a.name,a.parent_id,@v_level

from #temp a where a.parent_id in

(select id from #t1 where level=@v_level-1)

end

select a.level,a.id,a.name,a.parent_id,b.name parent_name

from #t1 a left outer join #temp b

on a.parent_id = b.id order by a.level asc

end

--执行

如果表organize为层级关系的表,则执行存储过程得到组织关系的树型结果

sp_get_tree_relation 'orgnaize','org_id','org_name','parent_org',1